Cooking range



Dec. 22, 1942. H, REEVES 2,305,634

COOKING RANGE Filed Nov. 2, 1939 Patented Dec. 22, 1942 UNITED STATES:

Ji iaTENT OFFiCE COOKING RANGE Application November 2, 1939, Serial No. 302,512

6 Claims.

My invention relates to cooking ranges and has to do more particularly with ranges utilizing liquid fuel.

Ranges of this type now on the market are subject to certain serious disadvantages with regard to temperature control. While thermostatic controls have been provided for such devices, with particular reference to the oven, it has not been feasible, where a pilot is not employed, to turn down the burner low enough to maintain a predetermined low oven temperature and still permit the operation of the burner at high flame to produce a desired high temperature. Although the desired results could be ob tained with a burner employing a pilot, this involves additional expense. Efforts have been made to solve this problem by building the oven with a fixed or permanent vent so that at low flame the excess heat could be quickly eliminated, but even this arrangement has not proven satisfactory.

An object of my invention, therefore, is to provide a range oven wherein the source of heat is a pilotless oil burner, said device being provided with auxiliary means for so controlling the heat that a desired low temperature may be maintained as Well as a predetermined high temperature.

Another object is to provide such a device with auxiliary venting means controlled automatically by the means for adjusting the fuel valve, whereby elimination of excess hot gases is facilitated when low temperatures are desired While the venting of said gases is more restricted at high temperatures.

Various other objects and advantages will suggest themselves to those skilled in the art as the description proceeds.

Referring now to the drawings forming a part of this specification and illustrating a preferred form of my invention Figure l is a vertical sectional view illustrating a cooking range embodying my invention;

Fig. 2 is a front elevational view with parts broken away to show the interior construction; and

Fig. 3 is a fragmentary enlarged perspective View showing the principal elements of my invention.

The numeral It represents generally a range having an oven portion I2 constituting a compartment within the range above a burner compartment l3 in which is disposed an oil burner represented diagrammatically by the numeral l5.

Rearwardly of the upper part of the oven 12 is r a compartment M, the rear wall of the oven being provided with apertures A to serve as vents for the passage of air into the compartment M and the ultimate escape thereof. The top wall of the oven i2 is also provided with apertures A for the passage of air into a space S which likewise communicates with the compartment M at the rear of the stove. The fuel flows to the burner 55 through a conduit it which communicates with a valve mechanism (not shown) within a housing It. Fuel flows to the valve housing from a fuel tank (not shown) through a conduit IS.

The valve within the housing i8 is manually controlled by means of a valve rod which extends vertically from the valve housing l8, terminating at its upper end in a bevel gear 2| cooperating with a similar gear 22 on a shaft 25. A bracket 26 carries a journal 21 for the valve rod 213 and also a suitable thrust bearing 28 for the shaft 25.

The shaft 25 has affixed to the front end thereof a manipulating knob 30 carrying a pointer 3| Disposed rearwardly of the knob is a fixed disc 33 having indicia 34 thereon representing degrees of temperatureor any other suitable information to guide the operator in adjusting the fuel valve.

A horizontal partition 36 is provided in the compartment [4 above the apertures A and in said partition is a segmental slot or other suitable opening 43. A segmental disc 42 is keyed to the valve rod 29, this disc being slightly larger than the slot 4!! and so arranged on the rod 20 that when the pointer 35 indicates the highest temperature on the disc 33, the slot will be entirely covered so as to prevent the passage of air therethrough, the fuel valve having its maximum opening, while, when the pointer indicates the lowest temperature on the scale, the slot 40 will be left entirely open to provide maximum auxiliary venting, the valve at this time having its minimum opening. At intermediate temperatures, proportional portions of the slot 40 will be left open so as to provide an intermediate degree of auxiliary venting, corresponding to intermediate valve adjustments.

Thermostatic control limiting the maximum and minimum positions of the valve in the housing I8 is obtained by means of a thermostat indicated diagrammatically at 45 which operates through a conduit 46 to a housing 48 for suitable mechanism for transmitting motion from the thermostat to the valve. Such arrangements are well known and need not here be described or shown in detail.

It will be understood that in operation of the oven, venting will normally occur at all times through the permanently open apertures A, the vented air passing upwardly and out through the passage S and into the upper portion of the chamber 14. In addition, auxiliary venting through the apertures A and slot to will occur at all times except at highest temperatures, when the slot 4!] will be completely closed. Proportional auxiliary venting will occur at all intermediate temperatures.

Various changes coming within the spirit of my invention will become apparent to those skilled in the art, and hence I do not wish to be limited to the specific form shown or uses mentioned, except to the extent indicated in the appended claims, which are to be interpreted as broadly as the state of the art will permit.

I claim:

, 1. In combination with a cooking oven having a vent, a liquid fuel burner, a fuel valve, and means for manually adjusting said valve including a rod, a damper carried by said rod for variabl closing said vent, said parts being so adjusted that the venting is maximum when the valve is at minimum opening, and vice versa.

2. In combination with a cooking oven having a permanently open vent and a variable vent, a liquid fuel burner, a fuel valve, and means for manually adjusting said valve including a rod, a damper carried by said rod for variably closing said variable vent, said parts being so adjusted that the venting is maximum when the valve is at minimum opening, and vice versa.

3. In combination with a cooking oven, a liquid fuel burner, a fuel valve, a chamber in the upper rear portion of said oven, a vent controlling flow of gas through said chamber, and means for manually adjusting said valve including a rod, a damper carried by said rod for variably closing said vent, said parts being so adjusted that the venting is maximum when the valve is at a minimum opening, and vice versa.

4. In combination with a cooking oven having a permanently open vent, a liquid fuel burner, a fuel valve, a chamber in the upper rear portion of said oven, a vent controlling flow of gas through said chamber, and means for manually adjusting said valve including a rod, a damper carried by said rod for variably closing said lastmentioned vent, said parts being so adjusted that the venting is maximum when the valve is at a minimum opening, and vice ersa.

5. In combination with a cooking oven having a permanently open vent in the upper surface thereof, a chamber in the rear of said oven communicating with said permanently open vent, a second vent leading from said oven to said chamber, a liquid fuel burner, a fuel valve, means for manually adjusting said valve including a rod, and a damper carried by said rod for variably closing said second vent, said parts being so adjusted that the venting is maximum when the valve is at minimum opening, and vice versa.

6. In combination with a cooking oven having a permanently open vent and an adjustable vent, a liquid fuel burner arranged to heat said oven, a valve controlling the flow of fuel to said burner, and manually operable means for adjusting said valve and for simultaneously adjusting the adjustable vent, said adjusting means being so arranged that the venting is maximum at minimum opening of said valve, and vice versa.

HERBERT M. REEVES. 

